/*-------------------------------------------------------------------------
 *
 * pg_statistic_ext.h
 *      definition of the system "extended statistic" relation (pg_statistic_ext)
 *      along with the relation's initial contents.
 *
 *
 * Portions Copyright (c) 1996-2017, PostgreSQL Global Development Group
 * Portions Copyright (c) 1994, Regents of the University of California
 *
 * This source code file contains modifications made by THL A29 Limited ("Tencent Modifications").
 * All Tencent Modifications are Copyright (C) 2023 THL A29 Limited.
 *
 * src/include/catalog/pg_statistic_ext.h
 *
 * NOTES
 *      the genbki.pl script reads this file and generates .bki
 *      information from the DATA() statements.
 *
 *-------------------------------------------------------------------------
 */
#ifndef PG_STATISTIC_EXT_H
#define PG_STATISTIC_EXT_H

#include "catalog/genbki.h"

/* ----------------
 *        pg_statistic_ext definition.  cpp turns this into
 *        typedef struct FormData_pg_statistic_ext
 * ----------------
 */
#define StatisticExtRelationId    3381

CATALOG(pg_statistic_ext,3381)
{
    Oid            stxrelid;        /* relation containing attributes */

    /* These two fields form the unique key for the entry: */
    NameData    stxname;        /* statistics object name */
    Oid            stxnamespace;    /* OID of statistics object's namespace */

    Oid            stxowner;        /* statistics object's owner */

    /*
     * variable-length fields start here, but we allow direct access to
     * stxkeys
     */
    int2vector    stxkeys;        /* array of column keys */

#ifdef CATALOG_VARLEN
	char		stxkind[1] BKI_FORCE_NOT_NULL;	/* statistic types requested
												 * to build */
	pg_ndistinct stxndistinct;	/* ndistinct coefficients (serialized) */
	pg_dependencies stxdependencies;	/* dependencies (serialized) */
#ifdef __OPENTENBASE__
	pg_dependencies stxsubset;	/* subset (serialized) */
#endif
#endif

} FormData_pg_statistic_ext;

/* ----------------
 *        Form_pg_statistic_ext corresponds to a pointer to a tuple with
 *        the format of pg_statistic_ext relation.
 * ----------------
 */
typedef FormData_pg_statistic_ext *Form_pg_statistic_ext;

/* ----------------
 *        compiler constants for pg_statistic_ext
 * ----------------
 */
#ifdef __OPENTENBASE__
#define Natts_pg_statistic_ext					9
#else
#define Natts_pg_statistic_ext					8
#endif
#define Anum_pg_statistic_ext_stxrelid			1
#define Anum_pg_statistic_ext_stxname			2
#define Anum_pg_statistic_ext_stxnamespace		3
#define Anum_pg_statistic_ext_stxowner			4
#define Anum_pg_statistic_ext_stxkeys			5
#define Anum_pg_statistic_ext_stxkind			6
#define Anum_pg_statistic_ext_stxndistinct		7
#define Anum_pg_statistic_ext_stxdependencies	8
#ifdef __OPENTENBASE__
#define Anum_pg_statistic_ext_stxsubset			9
#endif

#define STATS_EXT_NDISTINCT			'd'
#define STATS_EXT_DEPENDENCIES		'f'
#ifdef __OPENTENBASE__
#define STATS_EXT_SUBSET			's'
#endif

#endif                            /* PG_STATISTIC_EXT_H */
